New branch opened and updated

src/main/java/Student/Calculator.java

@@ -0,0 +1,19 @@
+package Student;
+
+public class Calculator {
+    public float Add(float a,float b){
+        return  a+b;
+    }
+    public float Sub(float a,float b){
+        return a-b;
+    }
+    public float mul(float a,float b){
+        return a*b;
+    }
+    public float div(float a,float b){
+        if(b==0){
+            throw new ArithmeticException("Cannot divide by zero");
+        }
+        return a/b;
+    }
+}

src/main/java/Student/Student.java

@@ -0,0 +1,37 @@
+package Student;
+
+public class Student {
+    private String name;
+    private int roll;
+    private String dept;
+
+    // Setter for name
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    // Getter for name
+    public String getName() {
+        return this.name;
+    }
+
+    // Setter for Roll
+    public void setRoll(int roll){
+        this.roll=roll;
+    }
+
+    // Getter for Roll
+    public int getRoll(){
+        return this.roll;
+    }
+
+    // Setter for Department
+    public void setDept(String dept){
+        this.dept=dept;
+    }
+
+    // Getter for Department
+    public String getDept(){
+        return this.dept;
+    }
+}